Lately I have noticed that some veins of red oxide of iron exist among these hills—quarries of marble must also be found there; since the sculptured ornaments that adorn the facade of all the monuments at Uxmal are of that stone. To-day the inhabitants of Yucatan are even ignorant of the existence of these minerals in their country, and ocher to paint, and marble slabs to floor their houses, are imported from abroad. I have also discovered veins of good lithographic stones that could be worked at comparatively little expense.
The surface of the country is undulating; its stony waves recall forcibly to the mind the heavy swell of mid-ocean. It seems as if, in times long gone by, the soil was upheaved, en masse, from the bottom of the sea, by volcanic forces. This upheaval must have taken place many centuries ago, since isolated columns of Katuns 1m. 50c. square, erected at least 6,000 years ago, stand yet in the same perpendicular position, as at the time when another stone was added to those already piled up, to indicate a lapse of twenty years in the life of the nation.
It is, indeed, a remarkable fact, that whilst the surrounding countries—Mexico, Guatemala, Cuba and the other West India Islands—are frequently convulsed by earthquakes, the peninsula of Yucatan is entirely free from these awe-inspiring convulsions of mother earth. This immunity may be attributed, in my opinion, to the innumerable and extensive caves with which the whole country is entirely honeycombed; and the large number of immense natural wells, called Senotes, that are to be found everywhere. These caves and senotes afford an outlet for the escape of the gases generated in the superficial strata of the earth. These, finding no resistance to their passage, follow, harmlessly, these vents without producing on the surface any of those terrible commotions that fill the heart of man and beast alike with fright and dismay.
Some of those caves are said to be very extensive—None, however, has been thoroughly explored. I have visited a few, certainly extremely beautiful, adorned as they are with brilliant stalactites depending from their roofs, that seem as if supported by the stalagmites that must have required ages to be formed gradually from the floor into the massive columns, as we see them to-day.
In all the caves are to be found either inexhaustible springs of clear, pure, cold water, or streams inhabited by shrimps and fishes. No one can tell whence they come or where they go. All currents of water are subterraneous. Not a river is to be found on the surface; not even the smallest of streamlets, where the birds of the air, or the wild beasts of the forests, can allay their thirst during the dry season. The plants, if there are no chinks or crevices in the stony soil through which their roots can penetrate and seek the life-sustaining fluid below, wither and die. It is a curious sight that presented by the roots of the trees, growing on the precipituous brinks of the senotes, in their search for water. They go down and down, even a hundred feet, until they reach the liquid surface, from where they suck up the fluid to aliment the body of the tree. They seem like many cables and ropes stretched all round the sides of the well; and, in fact, serves as such to some of the most daring of the natives, to ascend or descend to enjoy a refreshing bath.
These senotes are immense circular holes, the diameter of which varies from 50 to 500 feet, with perpendicular walls from 50 to 150 feet deep. These holes might be supposed to have served as ducts for the subterranean gases at the time of the upheaval of the country. Now they generally contain water. In some, the current is easily noticeable; many are completely dry; whilst others contain thermal mineral water, emitting at times strong sulphurous odor and vapor.
Many strange stories are told by the aborigines concerning the properties possessed by the water in certain senotes, and the strange phenomena that takes place in others. In one, for example, you are warned to approach the water walking backward, and to breathe very softly, otherwise it becomes turbid and unfit for drinking until it has settled and become clear again. In another you are told not to speak above a whisper, for if any one raises the voice the tranquil surface of the water immediately becomes agitated, and soon assumes the appearance of boiling; even its level raises. These and many other things are told in connection with the caves and senotes; and we find them mentioned in the writings of the chroniclers and historians from the time of the Spanish conquest.
No lakes exist on the surface, at least within the territories occupied by the white men. Some small sheets of water, called aguadas, may be found here and there, and are fed by the underground current; but they are very rare. There are three or four near the ruins of the ancient city of Mayapan: probably its inhabitants found in them an abundant supply of water. Following all the same direction, they are, as some suppose, no doubt with reason, the outbreaks of a subterranean stream that comes also to the surface in the senote of Mucuyché. A mile or so from Uxmal is another aguada; but judging from the great number of artificial reservoirs, built on the terraces and in the courts of all the monuments, it would seem as if the people there depended more on the clouds for their provision of water than on the wells and senotes. Yet I feel confident that one of these must exist under the building known as the Governor’s house; having discovered in its immediate vicinity the entrance—now closed—of a cave from which a cool current of air is continually issuing; at times with great force.
I have been assured by Indians from the village of Chemax, who pretend to know that part of the country well, that, at a distance of about fifty miles from the city of Valladolid, the actual largest settlement on the eastern frontier, in the territories occupied by the Santa Cruz Indians, there exists, near the ruins of Kaba, two extensive sheets of water, from where, in years gone by, the inhabitants of Valladolid procured abundant supply of excellent fishes. These ruins of Kaba, said to be very interesting, have never been visited by any foreigner; nor are they likely to be for many years to come, on account of the imminent danger of falling into the hands of those of Santa Cruz—that, since 1847, wage war to the knife against the Yucatecans.
On the coast, the sea penetrating in the lowlands have formed sloughs and lakes, on the shores of which thickets of mangroves grow, with tropical luxuriancy. Intermingling their crooked roots, they form such a barrier as to make landing well nigh impossible. These small lakes, subject to the ebb and flow of the tides, are the resort of innumerable sea birds and water fowls of all sizes and descriptions; from the snipe to the crane, and brightly colored flamingos, from the screeching sea gulls to the serious looking pelican. They are attracted to these lakes by the solitude of the forests of mangroves that afford them excellent shelter, where to build their nests, and find protection from the storms that, at certain season of the year, sweep with untold violence along the coast: and because with ease they can procure an abundant supply of food, these waters being inhabited by myriads of fishes, as they come to bask on the surface which is seldom ruffled even when the tempest rages outside.